SupremeTech building a Scalable Loyalty Points System on AWS cloud for a Global Restaurant Chain
This case study explores how SupremeTech developed a scalable loyalty points platform for a global restaurant chain. The solution integrates mobile apps, POS devices, and external point services to support real-time point redemption, coupon management, and a seamless member experience across thousands of stores.
Customer loyalty plays a critical role in the F&B industry. As digital ordering becomes standard, brands need a strong loyalty points system to increase retention and drive repeat purchases.
Project Overview
Our client is a Japanese restaurant corporation operating across Japan, Taiwan, Malaysia, and the United States. In Japan alone, their native mobile app serves nearly 6 million monthly active users. While customers could already earn points from other point system services (such as D Point, T Point, and R Point), the company wanted to build its own independent loyalty points system to strengthen engagement within its ecosystem.
The goals are to increase app traffic and improve retention. Enable personalized coupons and gift cards based on point data. At the same time, the system had to support high traffic, integrate with POS infrastructure, and remain stable under heavy load.
The Problem
The client wanted to build a loyalty points system from scratch, not as an add-on feature, but as a core part of their digital strategy and outstanding customer experience.
One major challenge was scale. After launch, traffic was expected to grow rapidly. The platform needed to handle hundreds of thousands of users at the same time without slowing down the ordering experience.
Integration was another key issue. The loyalty points system had to connect directly with the POS system to increase or deduct points in real time at checkout. It also needed to sync accurately with databases and other internal systems.
At the same time, the client required a smooth rollout. The new system could not interrupt daily operations or affect customer transactions. Stability, security, and performance were non-negotiable from day one.
The Solution
On the infrastructure level
We built a scalable cloud architecture on AWS to ensure the system could handle large traffic spikes without affecting performance.
- AWS ECS was used to automatically scale services when traffic increased
- AWS WAF was implemented to enhance security
- Direct Connect Gateways enabled stable communication between the POS system and the point system
- Amazon RDS supported member data migration and batch processing
Large-scale performance testing was conducted before release to simulate peak traffic conditions.
On the application level
SupremeTech developed the loyalty points system directly within the existing mobile app, which already included key features such as member registration, pre-payment, order history, coupon display, store search, and takeout services.
The mobile app integrates with the member system through SMS authentication using Vonage and Member API. This ensures secure login and seamless user identification across services.
At the core of the loyalty points system is the Point Gateway, which manages:
- Linking and removing point IDs
- Granting and redeeming points
- Using and validating coupons
- Querying usage history
- Connecting with app payment and barcode scanning
The Point Gateway also connects with external point services such as T Point, D Point, and R Point. This allows users to link or remove external IDs and redeem points smoothly.
To complete the cycle, the system integrates directly with the POS environment through the DMB system. When customers make a purchase:
- The POS communicates with the Point Gateway via API
- The system checks and applies coupons if eligible
- Points are earned, used, or canceled in real time
- The result is synced back to the client’s mobile app
This closed-loop architecture ensures that every transaction updates the loyalty points system instantly, providing a smooth and reliable customer experience.
Before release, large-scale performance testing was conducted to simulate heavy traffic. This ensured the loyalty points system could serve hundreds of thousands of users simultaneously while maintaining stable performance.
The Result
After the loyalty points system was officially released in July 2024, user engagement increased steadily.
Within the first six months, the percentage of customers using the client’s new point service when paying for dining bills are around 15 percent to 25 percent, excluding crew users. Since then, participation has remained stable at 25 to 26 percent, showing consistent adoption among customers.
The system also proved its scalability. Concurrent users increased fivefold, reaching up to 200,000 users every 30 minutes during peak periods, while maintaining stable performance.
With a smooth and reliable loyalty points system in place, customers are more motivated to return, earn points, and redeem rewards. At the same time, the operation team can design more targeted promotions based on point and sales data, helping drive both engagement and revenue growth.
What This Case Taught Us
Building a loyalty points system is not just about adding rewards. It requires a strong foundation that connects business goals, customer behavior, and system performance.
In this project, scalability and real-time POS integration were critical. A point system only works if it updates instantly, runs smoothly during peak hours, and does not interrupt the ordering flow. Technical stability directly affects customer trust.
This case also showed that a well-designed loyalty points system empowers both customers and the operation team. Customers enjoy clear benefits, while the business gains valuable data to design better campaigns and improve retention.
More importantly, it reinforced the value of partnership. By aligning closely with the client’s long-term digital strategy, SupremeTech delivered not just a feature, but a foundation for future cross-channel growth.
Conclusion
This project shows how a well-designed loyalty points system can become a strong growth driver for digital F&B businesses. By building the system from scratch with scalability, security, and real-time POS integration in mind, the client now has a stable foundation to increase retention and strengthen customer engagement.
The system enables the business to create personalized promotions and make data-driven decisions based on real usage behavior. With the right technical architecture and close collaboration, a loyalty points system can move beyond rewards and become a long-term competitive advantage.
Technical
Technology stack
Mobile App (Android, iOS), Backend, Database, Infrastructure
Team structure:
PTL, PM, BA, Sub BA, Sen BE, BE, Sen Android, Android, Sen iOS, iOS, Sen QC, QC, Infra
Work with SupremeTech
Planning to build or scale your own loyalty points system? SupremeTech helps businesses design secure, scalable, and high-performance platforms tailored to real operational needs.
👉 Get in touch with our team to start your project today.
